水土保持研究2018，Vol.25Issue(3)：285-291,7.
基于两种方法的攀西泥石流易发性评价对比分析
Comparative Analysis of Debris Flow Susceptibility Assessment Based on Two Methods in Panxi District
摘要
Abstract
The assessment of debris flow susceptibility is the basic work of debris flow risk assessment and vulnerability assessment,which can provide the basis for the prediction of debris flow disaster prevention.Taking the Panxi district of Sichuan Province as a study area,the weights of debris flow factor were determined by using contribution weight superposition method (CWS) and the Certainty Factor (CF) method,the multi factor evaluation model is adopted for debris flow susceptibility assessment and mapping,the frequency comparison model combining with the actual debris flow point was used for testing accuracy of the results.The assessment results of the two methods have high similarity to the overall distribution of the zoning results.High and very high prone areas of debris flow mainly distribute in the fault distribution in the central,southern and eastern parts of Panxi District as well as the Yalong River,Jinsha River and its tributaries on both sides.The evaluation accuracy of the deterministic weight model based on CF is higher than that of the contribution weight model.The numbers of debris flow of the two methods in the high prone areas and beyond account for 87.5 ％,58.22 ％ of the total number of actual debris flow points,and the frequency ratios are 6.02,3.71.The assessment result based on method for determining weight by the certainty factor has the higher accuracy,this method can effectively evaluate the debris flow susceptibility of Panxi.关键词
泥石流/易发性评价/贡献权重叠加模型/确定性系数模型Key words
debris flow/susceptibility assessment/contribution weight superposition model/certainty factor method分类
天文与地球科学引用本文复制引用
徐艳琴,白淑英,徐永明..基于两种方法的攀西泥石流易发性评价对比分析[J].水土保持研究,2018,25(3):285-291,7.基金项目
国家环保部公益性行业科研专项项目(201409055) （201409055）
国家科技基础性工作专项重点项目(2014FY110800) （2014FY110800）
